2025:Call for Challenges

Call for Challenge Proposals & Task Captains

Starting with MIREX 2025, we invite the ISMIR community to participate in shaping the future of Music Information Retrieval (MIR) by either proposing new research challenges or volunteering as task captains for existing ones.

• New challenge proposals should aim to address cutting-edge problems and push the boundaries of current MIR research.
• Task captains for established tasks are encouraged to help revitalize them—potentially by updating evaluation methodologies, datasets, or other aspects to reflect recent advances in the field.

We also welcome challenge sponsors from both industry and academia, particularly those willing to contribute datasets, evaluation tools, or computational resources to support the competition. This includes proprietary test sets—that is, datasets which will remain private and not be disclosed to either participants or MIREX organizers.

Rules for Year 2025

For both new and established tasks, all proposals must have an assigned task captain responsible for evaluating participant submissions.

Task Captain Responsibilities:

• Register on the MIREX Wiki and maintain the task description page.
• Collect submissions via the MIREX submission server (or provide customized submission instructions).
• Execute and evaluate the submissions.
• Report results to MIREX and create a results page on the MIREX Wiki.

(Optional) Present a MIREX task captain poster at the Late-Breaking and Demo (LBD) session at ISMIR 2025.

Subtasks

To invite research groups without access to large datasets or extensive computational resources, you are encouraged to create multiple subtasks that impose different restrictions on model size and dataset usage. Example:

 Subtask 1: Model size < 200M. Training set: MusDB18 only.
 Subtask 2: Model size: any. Training set: any.

Evaluation Methods

The task captain may choose freely how to evaluate the submissions. This includes but is not restricted to:

• Traditional MIREX evaluation pipelines
• Subjective evaluation (e.g., 2024:Symbolic Music Generation)
• Live leaderboards (please refer to 2025:Live Leaderboards for details)

Submission Format

A call for challenge proposal must contain the following content:

1. Title of the new task
2. Abstract
3. Task description
4. Significance of the task
5. Evaluation criteria
6. Datasets and resources provided
7. Requirements for submission
8. Task captain information (name, title, affiliation, email, and MIREX Wiki username)
9. Long-term plan (your willingness and availability to maintain the task in coming years)

A task captain proposal should contain the following content:

1. Title of the existing task
2. Abstract
3. Task description
4. Evaluation criteria, if different from previous MIREXes
5. Datasets and resources provided, if different from previous MIREXes
6. Requirements for submission, if different from previous MIREXes
7. Task captain information (name, title, affiliation, email, and MIREX Wiki username)
8. Long-term plan (your willingness and availability to maintain the task in coming years)

Please submit a 1-4 page PDF to the MIREX organizing committee future-mirex@googlegroups.com before the due date.

Multiple submissions

• A single individual may serve as the task captain for multiple tasks.
• Conversely, a single task may be co-managed by multiple task captains.
• If we receive similar proposals from different authors, we may reach out to coordinate a joint effort to co-host the task.

Deadlines

• Challenge proposals due: May 15, 2025
• Notification of acceptance: May 25, 2025

Contact Us

We look forward to receiving your innovative and impactful challenge proposals. If you have any questions, please do not hesitate to contact the MIREX organizing committee future-mirex@googlegroups.com.

MIREX 2025 Organizers:

• Gus Xia, MBZUAI
• Junyan Jiang, New York University
• Akira Maezawa, Yamaha
• Ziyu Wang, New York University
• Yixiao Zhang, ByteDance
• Ruibin Yuan, Hong Kong University of Science and Technology
• J. Stephen Downie, University of Illinois